Luigi Bormioli Set of 4 Romantica Stemmed Wine Glasses, 9.5-Oz. Crystal clear glassware Dishwasher-safe; made in italy Innovative glassmaking techniques produce perfectly smooth rims and edges Designed In Italy Lightness superiority to 98.8 Chroma inferior to 0.5 Iron oxide inferior to 140 ppm Resistant to over 2,000 industrial washing cycles. Sparkling maintained Guarantees the stems resistance to breakages even after multiple industrial washing cycles Glass sparkle and transparency is maintained Avoids any glass discoloration. purest raw materials, advanced and friendly melting processes highly innovative production processes, enable the achievement of a glass: extra pure and totally transparent, sparkling, longer lasting, resistant to breakage.